Ammonia Oxidation Potentials and Ammonia Oxidizers of Lichen–Moss Vegetated Soils at Two Ice-free Areas in East Antarctica

Kentaro Hayashi; Yukiko Tanabe; Nobuhide Fujitake; Morimaru Kida; Yong Wang; Masahito Hayatsu; Sakae Kudoh

doi:10.1264/jsme2.ME19126

Short Communication

Ammonia Oxidation Potentials and Ammonia Oxidizers of Lichen–Moss Vegetated Soils at Two Ice-free Areas in East Antarctica

Kentaro Hayashi, Yukiko Tanabe, Nobuhide Fujitake, Morimaru Kida, Yong Wang, Masahito Hayatsu, Sakae Kudoh

著者情報

キーワード: ammonia-oxidizing archaea, ammonia-oxidizing bacteria, nitrification, substrate concentration response, temperature response

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電子付録

2020 年 35 巻 1 号論文ID: ME19126

DOI https://doi.org/10.1264/jsme2.ME19126

詳細

抄録

The maximum ammonia oxidation potential (AOP) of a topsoil in Langhovde, East Antarctica was 22.1±2.4‍ ‍ng N g^–1 dry soil h^–1 (2‍ ‍mM ammonium, 10°C, n=3). This topsoil exhibited twin AOP peaks (1 and 2‍ ‍mM ammonium) at 10°C, but not at 20°C. Six and ten operational taxonomic units (OTUs) were identified for ammonia-oxidizing bacteria (AOB) and archaea (AOA) amoA, respectively. AOB were classified into Nitrosospira; the two dominant OTUs corresponded to the Mount Everest cluster. AOA were classified into three clusters; Nitrososphaera and Nitrosocosmicus were the two dominant clusters.

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